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7632384 |
Multi-functional sensor system for molten salt technologies
The present invention relates to a multi-functional sensor system that simultaneously measures cathode and anode electrode potentials, dissolved ion (i.e. oxide) concentration, and temperatures in...
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7582196 |
Laminated membranes for diffusion limited gas sensors resistant to pressure variations
A micro fuel cell sensor having laminated gas permeable membrane. The sensor comprises a housing, first and second gas diffusing electrodes spaced from one another, a fuel-cell spacer having an...
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7560012 |
Gas sensor
A gas sensor is constructed as follows. A protector ( 4 ) covering around a gas sensing element ( 2 ) has an inner hollow-cylindrical portion ( 6 ) and an outer hollow-cylindrical portion ( 7 )...
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7524407 |
Gas sensor
An oxygen sensor 10 includes an oxygen detection element 20 , which assumes a hollow tubular shape extending along the axis. The oxygen detection element 20 has a closed tip end and an opened...
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7476376 |
Metal composite oxide with novel crystal structure and their use as ionic conductors
Disclosed is metal composite oxides having the new crystal structure. Also disclosed are ionic conductors including the metal composite oxides and electrochemical devices comprising the ionic...
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7413687 |
Low temperature proton conducting oxide devices
A device for conducting protons at a temperature below 550° C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.
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7361620 |
Catalytically active layer
A catalytically active layer that is used, for example, as an electrode for a solid electrolyte-based sensor element of a gas sensor for determining a gas component in a gas mixture. The...
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7335287 |
Solid electrolyte sensor for monitoring the concentration of an element in a fluid particularly molten metal
The present invention relates to an electrochemical sensor for determining the concentration of a group IA metal in a fluid such as molten metal. The sensor comprises a substantially pure quantity...
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7237430 |
Method and apparatus for enhanced detection of a specie using a gas chromatograph
The invention includes a method and apparatus for a chromatography system having a chromatographic column for separating gases in a mixture from one another and an electrochemical gas sensor...
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7208071 |
Amperometric sensor for low level dissolved oxygen with self-depleting sensor design
A dissolved oxygen sensor having a cathode and anode immersed in an electrolyte is designed to provide a low background current in the sensor when a potential is applied to the cathode. The...
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7087151 |
Hydrogen sensor for use in battery overcharge/overdischarge detector and hydrogen leakage detector
A hydrogen sensor which may be employed in an overcharge/overdischarge detector for a battery and a hydrogen leakage detector for a fuel cell is provided. The hydrogen sensor includes a sensor...
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6960290 |
Testing and calibration device for an oxygen probe evaluation circuit and method of use of the device
A testing and calibrating device for an evaluation circuit of a linear oxygen probe (S) of an internal combustion engine is disclosed. Said device comprises a probe equivalent circuit (SES) having...
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6929735 |
Electrochemical sensor having improved response time
The invention relates to a method and apparatus for providing an electrochemical gas sensor having improved response time for detecting a gas introduced into the sensor. The sensor includes a...
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6896781 |
Gas sensor with electrically conductive, hydrophobic membranes
A highly accurate, long life, low cost gas sensor is disclosed, particularly useful for measuring carbon monoxide and other toxic gases in an environment. The gas sensor has a first, sensing...
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6890422 |
Oxidizable gas component sensor and method of using the sensor
An electrochemical gas sensor determining the concentration of oxidizable gas components which has an electrochemical measuring cell having a measuring electrode and a reference electrode....
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6837987 |
Carbon monoxide sensor
A method and apparatus for detecting the presence of carbon monoxide in a gas which may also contain contaminating substances uses a pre-treatment means to absorb contaminating substances and to...
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6808619 |
Electrode system
In an electrode system, particularly for electrochemical sensors, which comprises a working electrode, a counterelectrode and an electrolyte, the counterelectrode is constituted by a material...
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6761817 |
Smart determination of dissolved oxygen probe operating bias
A method and system for determining dissolved oxygen is disclosed. One or more constant currents are driven through amperometric-type dissolved oxygen probes to develop reference electrode...
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6758962 |
Oxygen sensing
Oxygen concentration measurement is carried out over a broad range by an instrument utilizing a zinc-air cell having a lower-than-nominal potential difference imposed across its electrodes by a...
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6723216 |
Method and apparatus for detection of a bubble in a liquid
A method for detection of a bubble in a liquid which is placed in a measuring chamber and is in contact with a sensor for measuring the partial pressure of a particular gas in a liquid is provided....
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6663756 |
Microchip-type oxygen gas sensor based on differential potentiometry
Disclosed is a microchip-based differential-type potentiometric oxygen gas sensor, which comprises a working electrode and a reference electrode. The working electrode is composed of a...
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6652722 |
Sensor for measuring the partial pressure of a gas of the type comprising an electrochemical cell and a gaseous diffusion barrier
Sensor for measuring the partial pressure of a gas in a gaseous medium, includes an electrochemical cell and a diffusion barrier with a porous membrane situated above an orifice made in a component...
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6623619 |
Electrochemical sensor for determining analyte in the presence of interferent and method of using the sensor
Electrochemical sensor for determining analyte in the presence of interferent, particularly carbon monoxide in the presence of hydrogen. An electrochemical cell is designed so that current flow...
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6623617 |
Method and apparatus for measuring concentration of a component in a gas
A method and apparatus which enable accurate measurement of the concentration of NOx in a gas under measurement, even when the NOx concentration is low. A gas under measurement is introduced into a...
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6592746 |
Sensor probe for determining hydrogen peroxide concentration and method of use thereof
A sensor probe is disclosed which can measure the hydrogen peroxide content of a single sample using two oxygen sensors whose electrodes are encased in defined membranes. The oxygen reference...
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6436258 |
Galvanic-cell gas sensor
A galvanic-cell gas sensor includes casings containing a diaphragm permitting the permeation of gas to be detected but having a water-repelling property, a cathode provided on the back side of the...
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6435003 |
Method of identifying a gas and associated apparatus
A method for identifying an unknown gas using a diffusion limited sensor providing an electrical signal output when exposed to the gas. According to the method, a sensor is disposed in a chamber of...
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6428665 |
Electrochemical gas sensor
An electrochemical gas sensor has a first gas diffusion electrode for a first reaction gas, which is inactive with respect to a second reaction gas at least in a first potential window, and a...
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6338783 |
Gas sensor, method of manufacturing the same, and gas sensor system using the gas sensor
A gas sensor which can detect the concentration of a combustible gas component in a measurement gas with high accuracy even when the oxygen concentration of the measurement gas or the element...
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6312585 |
Method for determining oxidizable constituents in a gaseous mixture
A method and arrangement is described for determining oxidizable constituents in a gas mixture by using a solid electrolyte cell with at least one reference electrode and at least one working...
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6306285 |
Techniques for sensing methanol concentration in aqueous environments
An analyte concentration sensor that is capable of fast and reliable sensing of analyte concentration in aqueous environments with high concentrations of the analyte. Preferably, the present...
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6303018 |
Method and apparatus for determining O2 and N2O in gas mixtures
A method for determining relative amounts of O 2 and N 2 O in gas mixtures by quantitative electrochemical reaction including feeding a gas mixture containing O 2 and N 2 O to a zinc-air cell...
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6287453 |
Method for the diagnosis of a continuous-action lambda probe
Periodic forced stimulations are asserted on setpoint values for a lambda control and a system response of a lambda control loop is simulated by a model that includes a sensor delay time as the...
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6258231 |
Chemical mechanical polishing endpoint apparatus using component activity in effluent slurry
An apparatus for determining the endpoint in a chemical mechanical polishing operation used for polishing a metal-containing material includes an electrochemical cell and an electronic circuit. An...
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6176989 |
Electrochemical gas sensor
An electrochemical gas sensor including a sensor body having a cavity, an electrolyte in the cavity, an auxiliary electrode in contact with the electrolyte, a sensing electrode in contact with the...
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6165347 |
Method of identifying a gas
A method and apparatus for identifying an unknown reactive gas in a carrier gas, utilizing a sensor with a diffusion limited inlet. After a signal is established for the carrier gas, a flow of the...
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6129825 |
Electrochemical gas sensor
A simple, reliable, and leak-proof electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte and first and...
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6123827 |
Method for calibrating sensors used in diagnostic testing
A method is disclosed for reliably calibrating a sensor used in diagnostic sensing of a predetermined parameter, e.g., CO 2 partial pressure, O 2 partial pressure, or pH, of a solution such as...
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6099708 |
Three-electrode electrochemical gas sensor
A simple, reliable, and leak-proof three-electrode electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte...
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6099707 |
Apparatus for sensing oxygen concentration
An apparatus and method for sensing a concentration of oxygen in a flow of gas in a breathing circuit for a patient. A biasing voltage is provided across a zinc-air cell so that the zinc-air cell...
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6090267 |
Methods and apparatus for quantitative analysis of a sample
Methods for determining the amount of volatile electrolyte present in an aqueous liquid sample comprise transferring the electrolyte from the aqueous liquid sample to an absorber solution across a...
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6090268 |
CO gas sensor and CO gas concentration measuring method
A CO gas sensor according to the present invention includes a gas collecting container for collecting a measured gas therein; a detecting section provided within the gas collecting container and...
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6083367 |
Oxygen electrode and its manufacture
An oxygen electrode having: an electrode substrate; a first electrode and a first lead wire formed on the electrode substrate; an insulating layer formed on the electrode substrate covering the...
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6084418 |
Method for accurately detecting sensor element resistance
An air-fuel ratio sensor generates linear air-fuel ratio detection signals proportional to concentration of oxygen in exhaust gas from an engine in response to a command voltage from a...
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6071393 |
Nitrogen oxide concentration sensor
A small-sized inexpensive nitrogen oxide concentration sensor capable of measuring the concentration of the nitrogen oxide in a measuring gas to a high accuracy. A first oxygen pumping cell, an...
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6066249 |
Method for calibrating an instrument for measuring electrolytes and metabolites by analysis of blood gases
A method for calibrating an instrument for the analysis of blood gases which possesses ion-sensitive electrodes and gas-sensitive electrodes and is used for the determination, in a biological...
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6024853 |
Electrochemical oxygen sensor
An electrochemical oxygen sensor with a measuring electrode, an atmospheric oxygen electrode as a reference electrode, and an auxiliary electrode in an electrolyte is improved such that a stable...
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6022463 |
Sensors with subminiature through holes
The present invention is a sensor having an electrode formed in electrical contact with a subminiature through hole. Because of the small diameter of the through hole, the material that fills the...
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6019879 |
Electrochemical gas sensor
The present invention is directed to an electrochemical gas sensor network. The network includes a gas sensor for receiving a gas and for generating a target gas concentration signal. The gas...
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6013163 |
Probe for detection of the concentration of various elements in molten metal
A system is provided for measuring the concentration of an element in molten metal such as silicon, chromium, manganese or aluminum. The system includes a probe with a sensor having a solid...
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